Being the language lovers that we are... A place to talk about, or write in languages other than Spanish and English.

I use English as my base language because it is the language I use most in day to day life (I'm from holland)

However, i've been considering now that I want to learn other languages, to use Spanish as my base language so that I can also refresh my Spanish. Do you think this is a good idea? or should you stick with 1 base to effectively learn a new language?

I'm not sure what you mean by base language, but English is surprisingly related to Spanish. If you don't already know this, if you have a good English vocabulary you will find that there are many cognates in Spanish. You may need to keep just one base.